Pump.



J. E. SHUTT.

PUMP.

APPLIUATION FILED MAR. 31, 190B.

Patented rime 15,1909.

JOHN E. SHUTT, OF GANADO, TEXAS.

PUMP.

Specicationfof Letters Patent.

Patented .Tune 15, 1909.

Application led March 31, 1908. Serial No.424,398.

To all whom it may concern:

Be it known that I, JOHN E. SHUTT, a citi zen of the United States, residing at Ganado, in the county of Jackson and State of Texas, have invented a new and useful Pump,'of which the following is a specification.

This invention relates to double act-ing pumps for pumping water from deep wells, and has for its object to provide a simple and durable construction of pump of this character which will withstand the most severe conditions of service, and which will be reliable and will continuously elevate va large volume of water, and which can be readily secured in place and removed.

The invention further has for its object to provide an operating mechanism for a double acting pump by means of which a very long stroke will be obtained and the operation carried on in a very eflicient manner.

The invention also has for its object certain improved details of construction by means of which the operation of the parts will be facilitated all as hereinafter set forth and claimed.

Referring to the accompanying' drawings, Figure 1 is a view in elevation of a pumping apparatus constructed in accordance with this invention, and, also, showing broken away and in vertical section, a portion of a well casing containing the lower ends of the plunger rods and their plungers. Fig. `2 is a plan View showing the construction of one of the rocker levers. Fig. 3 is an enlarged detail view showing the means for automat* ically oiling the pivotal connection ofthe rocker arms and levers. Fig. 4 is an enlarged detail View showing the lower end of the upper plunger rod and plunger. Fig. 5 is an enlarged detail view showing the lower end of the lower plunger rod and plunger. Fig. 6 is an inverted plan view of the lower plunger.

The mechanism may be used either with an engine or with a wind-mill pump.

1 is the lower plunger rod adapted to be connected at its upper end to the lower end of the pump rod of a wind-mill or other operating device. 2 is the hollow upper plunger rod having its upper end connected to a cross head 3. The lower plunger rod 1 is secured to a cross head 4 by bolts 5 and extends down through and is movable in the upper plunger rod 2.

Pivotally connected to the cross heads 3 `ends of the pin 10 securely to the cross beams 11. The rocker levers 8 and 9 are each constructed with two members, as shown `in Fig. 2, each member having a central,

partly curved portion 15, mounted on the pin 10 and branch arms 16 extending from said central portion 15 and uniting at their outer ends to form sockets 17 in which are pivoted the outer ends of t-he links 6 and 7. The rocker levers 8 and 9 have their branch arms 16 disposed on the central portion 15 in different planes from each other, whereby the adjacent lower edge 18 of one of said branch arms will be parallel to the adjacent upper edge 19 of the other branch arm. The upper edge 20 of one of the branch arms of each rocker lever, and the lower edge 21 of the other branch arm of each lever taper from the center to their outer ends.

The rocker lever 8, constructed as shown and described, is located within the rocker lever 9 to move therein. The rocker levers made in this way are prevented from binding, and, as shown in Fig. 1, they come quite close together.

Vhen the rocker levers are at the other end of their stroke or opened to the fullest extent, the cross heads are pushed far apart, making a very long stroke which gives a similar long stroke to the plungers.

22 is a stufling box in the cross head 3, through which extends and moves the lower plunger rod 1.

Means for oiling the pivotal connection of the rocker levers and the links connecting them with the cross head is provided as follows 23 and 24 are the pins connecting the rocker levers 8 and 9 with the links 6 and 7. The pin 23 is provided with a slot 23 eX- tending partly about said pin, and extending into the link 7 is a pipe 25 having its lower end opening into the hole in which the pin 23 is located. On the top of said pipe 25 is an oil cup 26 distributing the oil to said pin. The pin 23 is held in fixed position by a screw 26 and in the lowest position of the links 7 and rocker levers 8 the end of the slot 23 is out of alinement with the lower end of the pipe 25 cutting olf the flow of oil to the pin 23. y f

Depending below the pin 28 and communicating with the slot 23 is a branch pipe 27 which when the rocker arms are close tof" f cover, not shown, which makes it in effect a vacuum oiler, when the oiler stands in a vertical position, or, in other words, when the links 6 and 7 and rocker levers 8 and 9 are in close together no oil can flow out of the cup 6 as no air can be admitted to take the vplace of the oil discharged.

Vhen the lever-sare drawn apart, the oil cup swings outward, air is allowed to enter, the vacuum is relieved, and oil flows out to the bearings below.

It will be seen that when the levers are moving apart, the groove 23 in the pin 23 will be brought beneath the lower end of the pipe 25 and permitoil to enter therein. On the return stroke, when the levers return again to the closed position, the pipe 25 is cut olf and the oil admitted to the slot 23 passes down the pipe 27 and through pipe 28 to the pin 24:. It will thus be seen that only during the opening stroke are the pins 23 oiled, and at the completion of the closing stroke the pins 24 are oiled. It will be noted that the lower faces of the plungers are provided with slightly helical ribs 31 so beveled that when the plunger has moved down through the water, the pressure of the water passing through the openings of the plunger will exert a force tending to turn the plunger to the right or in a direction that would tend to tighten all of the valve threads and also the threads on the pump I'Od.

In order to prevent choking the lower plunger the uprights or standards 32 of said plunger are Vshaped in cross section, the knife edges 33 of the standards contacting with the ball valve 34. By this means sand will be prevented from becoming wedged between the ball valve and the standards, thus avoiding choking the valve. It will be seen that by means of the construction of a double actuating pump as hereinbefore set forth, a

light running pump is provided due to the fact that the rocker arms and rods balance one another. Also, by means of such con- Y struction a continuous stream of water can be obtained and the increase of flow of water will be materially greater. By means of this invention, also, the valves of the plunger rods will not become unscrewed, but they will be automatically kept tight. The bearings, also, will be automatically oiled during the stroke of the mechanism.

What is claimed is l. In a pump of the class described, a pair of reciprocatory plungers arranged to move toward and from each other, a pair of concentric rods connected to said plungers, a stationary shaft having a diametrically disposed passage therethrough, a pair of interlitting rocker levers on said shaft, a pair of sets of links extending from said rocker levers, one set being disposed above said levers and the other set below the same, cross heads forming connections between the links of each set, the innermost plunger rod extending through both cross heads and through the diametrical passage of the shaft and being secured to the uppermost cross head, and the outer plunger rod being secured to the lowermost cross head, substantially as specified.

2. In a pump of the class described, a pair of reciprocatory plungers, concentric plunger rods carrying the same, a stationary shaft having an opening therethrough, a pair of interlitting rocking levers mounted upon said shaft, upper and lower links pivotally connected to the outer ends of said levers, a cross head connecting the inner ends of the upper links, the inner plunger rod extending through the opening of the shaft and being secured to said cross head, a lower cross head connecting the inner ends of the lower links and connected to the outer plunger rod, and a stuiiing box carried by said lower cross hed for` the passage of the inner plunger ro V In testimony that I claim the foregoing as my own, I have hereto aiiiXed my signature in the presence of two witnesses.

JOHN E. SHUTT.

lVitnesses:

C. F. Coius, CHAs. WV. SILLIMAN. 

